How will the Universe end? Dive into the complete 2-hour exploration of the biggest questions in cosmology from the Big Bang to the final moments of existence. This ultimate documentary covers the leading theories on the ultimate fate of the Universe, including Heat Death, the Big Crunch, the Big Rip, and Vacuum Decay. We'll track the long timeline of cosmic decay, the death of stars, the evaporation of black holes, and the eventual triumph of dark energy. Uncover the science behind our expanding Universe and the chilling reality of cosmic uncertainty. If you're fascinated by the science of the cosmos, hit the LIKE button, SUBSCRIBE for more deep-dive science videos, and let me know in the comments: Which end-of-the-universe theory do you find most compelling?